|This article belongs to the Classic Continuity|
Duped is the second episode of Ben 10: Ultimate Alien.
The Forever Knights try to invade the museum using an alien paramilitary tank, but they're interrupted by Ben as Rath. Gwen calls Rath and tells him that he's missing Julie's tennis game. Rath sees the Forever Knights running away, gets angry, and tears apart their tank, then heads to the stadium for Julie's game. When Julie is about to begin her match, Ben shows up and draws attention to himself, blowing her concentration in the process. Julie and Gwen get mad at Ben for showing up late. Kevin wants to investigate why the Forever Knights tried to rob the museum, but Gwen disagrees on going, stating that they're probably stealing some tech to rule the Earth. Ben also wants to catch the Sumo Slammers movie, but Gwen tells him not to. She tells Ben he can't be in two places at once.
Ben then comes up with a plan and transforms into Echo Echo and splits into three, then transforms back and this time there are "three Bens". One of them is the "logical" Ben, the second is the "sensitive" Ben, and the third is the "arrogant" Ben. However, he doesn't know this. The logical Ben goes to the Sumo Slammers 3-D movie, the sensitive Ben goes with Kevin to investigate the Forever Knights robbery, and the immature Ben stays to watch Julie's match. Meanwhile, the Forever Knights, and their king Urien go through a sewer and blow up a wall, creating a tunnel that they enter.
Unfortunately at the match, the immature Ben makes loud comments that distracts Julie and he does loud interviews. Ben also flirts with other girls, angering Gwen and Julie. Meanwhile at the museum, Kevin and the sensitive Ben arrive at the museum. Ben talks about his feelings, which annoys and weirds out Kevin. Back at the match, Gwen yells at immature Ben for being a jerk and he loudly says that Julie is supposed to lose. Meanwhile, the logical Ben is enjoying the Sumo Slammers movie. The Forever Knights are burrowing under the museum and one of them plant a device at Urien's behest. An explosion rocks the museum and Kevin recognizes the device. Sensitive Ben transforms into Humungousaur and the ground collapses beneath him and Kevin.
They fall into where the Forever Knights are located and the Forever Knights attack. Humungousaur says that the Knights are being hurtful and Kevin tells Humungousaur to do something, but Humungousaur says that they should work towards a common plan and Kevin tells Humungousaur to throw him. He does and knocks out the Forever Knights. Humungousaur hits his head and transforms back into sensitive Ben. Urien gets to the artifact he is looking for, which is a jewel, and takes it. Ben tells him not to touch the exhibits, which disgusts Kevin. While they argue, Urien activates a suit of ancient robot armor, Toltech Battle Armor, that envelops him and attacks Ben and Kevin. As Kevin fights Urien, sensitive Ben calls the other Bens. They both run to help, disappointing Julie. The other Bens arrive, which causes Kevin to be confused, and explain the situation to him before activating their Ultimatrixes. Logical Ben transforms into Big Chill, Sensitive Ben transforms into Cannonbolt, and Immature Ben transforms into Murk Upchuck. The three aliens attack Urien, but they ultimately get in each others' way and are defeated. They all transform into Echo Echo and merge into one. Echo Echo then transforms back into Ben as Kevin is being defeated by Urien. Ben then transforms into Lodestar and tears the armor apart with his magnetism. The pieces of the armor fall on Urien, causing him defeating to be defeated, before Lodestar transforms back into Ben. At the stadium, Ben apologizes to Julie for not being present at the match. Even though Julie won the tournament, she was upset at Ben thanks to his immature clone embarrassing her. She kindly asks Ben to make it up for her by taking her to see the Sumo Slammers 3-D movie to make up for it, but Ben mentions that he saw it during the match, which causes Julie to be very furious. She and Gwen storm off in disgust along with Kevin, leaving Ben all alone to repent for what he has done in order to gain back their trust.
Ultimatrix Alien Debuts
- Rath (Ultimate Alien debut)
- Echo Echo (Ultimate Alien debut)
- Murk Upchuck (Ultimate Alien debut)
- Big Chill (Ultimate Alien debut)
- Cannonbolt (Ultimate Alien debut)
- Lodestar (Ultimate Alien debut)
- Ben's middle name is revealed to be Kirby.
- Rath (first re-appearance; off-screen transformation)
- Echo Echo (x2; first re-appearance)
- Humungousaur (sensitive Ben)
- Murk Upchuck (immature Ben; first re-appearance)
- Big Chill (logical Ben; first re-appearance)
- Cannonbolt (sensitive Ben; first re-appearance)
- Lodestar (first re-appearance)
Naming and Translations
- When Gwen asks Immature Ben about his attitude, he replies "I'm Ben classic", a reference to his personality in the original series and the third season of Alien Force.
- This episode is the 100th episode overall of the franchise.
- An episode of Static Shock shares the same title and has also been written by Len Uhley.